Heh, it suggested I take .9 less Pillars and .2 more Eclipses...
Well the idea is that the number given is really a minimum value, meaning extra copies are accepted and actually probably suggested, due to the "give or take" of random drawing, but it's not entirely necessary.
weird I thought of the same thing, except I based it around making a three turn win. Mine has too many variables, but it was based off a normally constructed deck I was using. It felt very, very similar to play
Your deck strat
4vj 4vj 4vj 6u2 7ae 7ae 7ae 7dp 7dp 7dp 7dq 7dq 7dq 7dq 7dq 7dq 7jv 7jv 7jv 7qb 7tb 7tb 7tb 809 809 809 809 809 809 80k
reg deck strat
4vj 4vj 4vj 4vj 6u2 74a 77g 77g 7ae 7dp 7dp 7dp 7dp 7dp 7dq 7dq 7dq 7dq 7dq 7dq 7jv 7qb 7tb 809 809 809 809 809 809 80k
In the case of Novae and Cremation decks, as I failed to mention their unique form of quanta gain, you can group cards from different elements that serve the same general function, so substitutes can be made. In other words, as in the regular strategy, an Improved Blessing can be replaced with Unstoppable. As for the damage cards, Giant Frogs and Vampire Daggers can be replaced by Elite Graboids, also in the regular strategy. I'm not exactly sure how you got that many damage cards in the strategy using my theory. I loosely implied at the end of my example that after balancing key cards, it's cleanup. Fixing QI, in your case adding more Novae and Cremations. Then for the "give or take" of random drawing, add more key cards. Lastly damage, unless of course the key function of the deck is concentrating on fast damage. I'm not sure if I answered your question entirely, since you never really gave one directly.
The idea is somewhat limited, as it is assumes that the cards in your deck are evenly distributed, which isn't always going to be the case. However it will give you a general idea.
The reason the smallest possible deck is desirable is that the possibility of poor draws is lower. Let's take your deck for instance. A 32 card, 4 otyugh version has a 1 % better chance of having that second turn otyugh. A single percent might not sound like much, but there's no cost for this improvement. It also applies to every card in your deck.
It's also worth noting that as the game continues, the percentages grow. The chance to have at least 2 otys by turn 8 is 2% higher for the 32 card deck (also of note is the fact that the chance of having exactly 2 otyughs is actually 3% higher).
This is taking it to an extreme but I think it helps illustrate what is going on. Let's say you're comparing a 60 card deck with 2 eternities to a 30 card deck with 1 eternity. The chance of the 30 card deck not drawing its eternity in 30 cards is 0 (obviously). The chance for the 60 card deck is roughly 25%.
Long story short, unless you're a stall or have card drawing, the smaller the better.
Well first off, the deck used as the main example is a low-damage stall, so I found 40 to be a comfortable decksize. And as mentioned above, adding extra copies is acceptable to make up for that "give or take" with random drawing. Even if the "give or take" is not considered, the theory reduces the maximum of each end since the theoretical build is based off producing the ideal outcome.